U need to rewrite that effect. As it is now, it's useless. If the attack already hit, then the damage is already done and the extra critical is wasted. It should be When this card declares an attack you may pay the cost.

The card is not even completed. You forgot to put the lv core requirements. It's far too powerful, but balanced off by it's impossible summon cost. Even with mad core gain, it would be impossible to summon. It's all powerful effect is useless against white armor abilities. In trying to make a powerful card, u ended up making a useless one.

U need to put in at least 2 burst wall cards. Replace Baragan with Sunk Shine. Both have the same trigger, but sunk shine will help u with core gain which is a must in Galaxian Decks. Substitute the windhero for the Retsuhero. His Violent swift core recovery will allow for quick leveling up of your Galaxians during battle. If u ever want to bring out that cost 12 spirit, and use it's effect, u need better core gain.

I scraped my immortal deck to make this one. I may make my immortal deck in the future, but for now I want to test this one. Who knows, I may scrap this deck and make an all purple cards Immortal Deck.

Seriously, has no one noticed that the deck is incomplete? A Yugioh deck must have a minimum of 40 cards. Fusions, XYZ, and synchros go to the extra deck not the main deck which only has 37 cards in it. How in the world did this deck become deck of the week? It's not even a deck. By the way, since you only have 2 cards in the extra deck, which holds a max of 15, you don't need to put the synchros' in the side deck. The side deck is for swapping cards in between matches. There's plenty of room in the extra deck, there's no need to swap.

No card has that much standard power. Even the crossrides max at 13k. I know Dragonic Overlords are all about standing, but they're not easy to use like this. A sb of 4 is way too easy to use. Overlord is easy to use, but easy to guard. The end is tougher to use, but the opponent doesn't know when it's comming. Try again.

Combine the 1st and 2nd ability into 1 like Majesty Lord Blaster.
the last ability is a bit much. the cb cost makes it possible to use more than once. (honestly I don't mind that.)
The +3k each is way too much considering he can still be boosted.
I would not mind the +3k each if he did not also get an extra crit on top of his Early crit.
If you play vanguard, you know it's not hard to meet the requirements you set up. Your set-up has him easier to activate than Majesty.

As far as I can see, your deck is inconsistent. Your attacks suggest earth and bravery yet your creatures and battlegear do not support it. I understand your reason for putting in Najarin, however, in battle he'll fall easily. Once he's out, Marrilians will make short work of this deck. My mippedian invisibility deck can beat this deck no problem. You have 2-3 good monsters that work well for front line offensive but no good support. An enemy with swift and range can tear you apart from the rear working forking forward. It just seems to me like you put cards you like together and called it a deck. A true deck has strong offensive, support, and a unifying theme capable handling whatever your opponent throws at you. I don't see that here.

To begin, it doesn't even follow the rules. Only 4 heals in a deck. @ the time of this post u had 5. The deck is all over the place with no strategy or structure behind it. There r way too many clans in the deck. Triggers can only be activated if a member of the same clan is on the field. Odds are when u get a trigger, u won't be able to use it's power because u won't have anyone of the same clan on the field. U have 2 Battleraizers on the deck. If u get 1 doing a check, the other has to be on the field to use the trigger. Stay with 1 clan and pick a theme. If and when u start making decent decks u can try mixing the clans; but even then don't mix more than 2 clans.

This card can only be activated when there is a face-up "Dark Magician" on your field. When your opponent declares an attack, select and activate one of the following effects.
Or
This card can only be activated when your opponent declares an attack and selects a “Dark Magician” on your field as the attack target. Select and activate one of the following effects.

• Select a different monster card on the field as the new target of the attack. If the new target is controlled by your opponent, all battle damages are dealt to your opponent.
• Negate the attack and deal damage to your opponent's LP equal to the attack of the attacking monster.

Junk Warrior can reach 5300 attack by his effect. I know because I've been able to get him to 5300 about a dozen times. Usually 4300. with the right cards I've gotten him to 6300. (Giant germ, Nimble Momanga, Limit Reverse) There are many powerful level 6 and below synchro monsters. Perhaps if u made it level 4 and under or gave it some kind of negative effect to act as a counterbalance. with this card, and 3 others I can win in 2 turns.
Turn 1- set Giant Germ, this card, and Limit Reverse.
Opponent's turn- They summon a monster and attack Giant Germ. Germ's effect activates. I summon 2 more germs opponent looses 1000 LP.
Turn 2- I summon Junk syncron use it's ability to summon germ from grave. Summon Junk Warrior with germ from grave. Activate Limit reverse and Fast as Sound. (best if chained to Warrior's effect.) Warrior's attack = 4300 (5300 if Limit Reverse was chained.) kamikaze germs to deal 3000 damage to opponent. Opponent at 4000 LP. Junk Warrior direct attack for game.

First off, u seriously need to work on your wording. Second, not a good name. 'Dragon's Revenge' is better suited for a spell or trap card card not a monster. Might work as 'Revenge Dragon'. Finally, if it's a dragon bent on revenge, y does it have high defense? A creature out for revenge would be offensive not defensive. Not saying it can't have high defense, just not higher than the attack. And don't make it stronger than Blue eyes unless u make it special summon only.

It's a synchro monster but has no synchro format. I also have a question or two about the effects.

when this card is special summoned (special sumoned from anywhere, from the grave, or synchro summoned?) and you have a face up "shinobi" monster card on the field special summon 1 "shinobi" monster card from your graveyard. Shinobi monsters are unaffected by trap cards